Dynamic Modeling and Vibration Analysis of the Drum Washing Machine Based on Four-terminal Parameter Method

In this study, the drum washer's dynamic model has been conducted using Four-terminal parameter method. Firstly, the basic principles and advantages of the four-terminal parameters has been explained, and we have analyzed the vibration mechanism of the drum washer. Secondly, the drum washer was simplified,and we extracted its dynamic model. Thirdly, we solve each of its components by using the four-terminal parameter method,and according to the connection between the components, determine each component and the system's four-terminal parameters.Then, deduce the system's matrix equations,get the complex steady-state response and steady-state response under sinusoidal excitation of the system. Last, input the drum washer's actual parameters,we can see that four-terminal parameter method dynamics model is correct. In a word, it is easy to analyze the vibration of complex systems. This paper is designed to provide theoretical support for the design of the drum washer's damping device.